使用JavaScript调用DYMO Connect Desktop自定义标签XML打印报错求助

Let's break down your problem and fix it step by step—this is a super common issue with DYMO's two separate label ecosystems. The core problem is that DYMO Connect uses a completely new label format (.dymo files) that's not compatible with the older DYMO Label Framework SDK you're using (DYMO.Label.Framework.3.0.js).

First Error: openLabelXml() throws XmlException #

The error 'Element' is an invalid XmlNodeType happens because the XML exported by DYMO Connect has a totally different structure than what the old SDK expects. The legacy Label Framework only supports the classic <Label> root-node XML format (used in .lbl files), while DYMO Connect exports a <DYMOLabel> structure with new nodes, attributes, and metadata that the old SDK can't parse.

Fix: #

1. Export your label in the legacy .lbl format from DYMO Connect:
   • Open your label in DYMO Connect
   • Go to File > Save As
   • Choose DYMO Label File (*.lbl) as the file type (not .dymo)
2. Read the content of this .lbl file as a string, then pass it to openLabelXml()—this will match the structure of the working example in PrintMeThatLabel.js.

Second Error: openLabelFile() throws "Illegal characters in path" #

This error usually stems from one of two issues:

• You're passing a file path with special characters (spaces, non-ASCII characters like Chinese, or invalid syntax)
• You're trying to use openLabelFile() in a browser environment with a non-local path (the SDK can't access server files or arbitrary local paths directly)

Fix: #

• Use a clean, absolute file path: If testing locally, make sure your path uses only ASCII characters and no spaces (e.g., C:\Labels\MyLabel.lbl instead of C:\My Labels\标签.lbl).
• For browser apps: Instead of using openLabelFile(), let users upload the .lbl file via a file input, read its content as a string, and use openLabelXml() to load it. Here's a quick snippet:

  // Example: Load label from user-uploaded .lbl file
  document.getElementById('labelFileInput').addEventListener('change', function(e) {
    const file = e.target.files[0];
    const reader = new FileReader();
    reader.onload = function(event) {
      try {
        const label = dymo.label.framework.openLabelXml(event.target.result);
        // Set your label content here
        label.setObjectText("TextField1", "Your Custom Text");
        label.print();
      } catch (err) {
        console.error("Failed to load/print label:", err);
      }
    };
    reader.readAsText(file);
  });
  

Long-Term Solution: Migrate to DYMO Connect Web SDK #

If you want to use all the new features of DYMO Connect (like modern label designs), you'll need to switch to the DYMO Connect Web SDK—this is the official SDK for working with .dymo files. Note that it's not backward-compatible with the old Label Framework, so you'll need to rewrite parts of your code to match its API.

内容的提问来源于stack exchange，提问作者gogognome